Other works

(1999) TV commercial: 10-10-220 phone service

(April 2002) Stage: Appeared (as "Carl Bolton") in "Mornings at Seven" by Paul Osborn, Lyceum Theater, New York City.

(July 2002) Stage: Appeared (as "Malvolio") in "Twelfth Night" by William Shakespeare, Delacorte Theater, New York City.

(2007) TV commercials (as his character "Doc Brown" from the "Back to the Future" series): DirecTV

(2008) Music video: Appeared (as "Doc Brown") in "Check Your Coat" by O'Neal McKnight, featuring Greg Mays.

(1985) Music video: Appeared (as "Doc Brown") in "The Power of Love" by the rock band Huey Lewis & The News.

(1991) Music video: Appeared (as his character "Fester Addams" from the "Addams Family" films) in "Addams Groove" by M.C. Hammer.

(August 2010) Stage: Played Willie Loman in an off-Broadway production of Arthur Miller's "Death of a Salesman" in Weston, West Virginia.

(May 2013) Stage: Starred in the Classic Stage Company production of Bertolt Brecht's "The Caucasian Chalk Circle" in New York City.

(October 17, 1960) He acted in William Shakespeare's "A Midsummer's Night Dream", in an American Shakespeare Festival production at the Hanna Theatre in Cleveland, Ohio with Bert Lahr, Mitchell Agruss, Rae Allen, Clayton Corzatte, Will Geer, John Harkins, Mariette Hartley, William Hickey, Patrick Hines, Margaret Phillips, Richard Waring, Douglas Watson, Christopher Agruss, Alexandra Berlin, Constance Bollinger, John Dorman, Ellen Geer, Sheila Handelman, Joseph Klimowski, Alfred Lavorato, Susan Ludlow, Arthur Malet, David Margulies, Suzanne Osborne, Billy Partello, Howard Poyrow, Robert Reilly, George Sampson, Stephen Strimpell, Alex Viespi and Wisner Washam in the cast. Marc Blitzstein was composer. David Hays and Peter Wexler were set designer. Thea Neu and Dorothy Jeakins were costume designers. George Balanchine and Diane Forhan were choreographers. Jack Landau was director.

(February 9, 1990) He played the Captain in August Strindberg's play, "The Father", in an American Repertory Theatre production at the Loeb Stage in Cambridge, Massachusetts. Robert Brustein was adapter, artistic director and director. Derek McLane was set designer. Dunya Ramicova was costume designer. Richard Riddell was lighting designer. Maribeth Back was sound designer.

(2018) FIAT TV-commercial: Playing a traffic officer, but this is obviously a reference to his role of Dr. Emmett Brown, as the whole commercial is about an automobile, that already represents the future. The commercial also features time-travel elements and the whole spot uses the original iconic Back to the Future score.

(March 2022) He appeared alongside stars Ryan Reynolds and Mark Ruffalo as an expert offering what time really means in a public service announcement promoting the film The Adam Project (2022) on the streaming media provider Netflix.